- Range of 0-5 ppm - Multi-gas unit that simultaneously monitors, displays, and alarms for one to four gases with many different interchangeable, 'smart' electrochemical sensors available. These units are housed in an ultra durable case that is virtually unbreakable, highly water resistant, dust proof, and RF resistant. This is the only unit that would float if dropped accidentally in water! The large digital display with backlight shows the levels of the gases and the push button menu for the advanced microprocessor's features which is password protected. There is the option of a built-in air pump, internal datalogger, and more.

- Range of 0-20 ppm - These single gas, personal size monitors replaced the original Gasman (1991-2000) and Gasman II (2000-2009) units. This version is the lightest and lowest cost but is also the most advanced, flexible, durable, and compact! Each unit offers easy one button operation, a large backlit digital display, peak hold, IP65 & IP67 water and dust protection, with multiple levels of built-in audio, visual, and vibrating alarms including TWA in toxic versions. Replaceable batteries last up to two years in oxygen and toxic versions. Rechargeable batteries and a charger are used for combustible versions. There is no built-in air pump but each unit comes standard with a flow cap and internal event logging with optional communication software.

- Ranges of 0-3 ppm to 0-100 ppm - The Xgard Series are remote toxic, Oxygen, and combustible gas detectors that use the latest sensor technologies and come in a variety of different types for extreme flexibility at a low price. These are the best choice for every application except that there are no Xgard types currently offered with local digital display. If you must have this option at the remote sensor itself, then you would choose the TXgard Series. All of the Xgard Series can be connected and powered by the Gasmaster Series of single and multi-channel control units which offers digital display, built-in battery back-up, continuous output signals, common and individual dual level alarms, relay contacts, and can be used with most other remote sensors that transmit a 4-20 mA signal.

- Ranges of 0-5 ppm to 0-20 ppm - The TXgard Series of remote toxic and Oxygen gas sensors offers a local digital display which are not available on the newer, less expensive Xgard Series. The TXgard-IS+ is Intrinsically safe and lightweight. The TXgard Series can be used with any controllers or PLC that can interpret a 4-20 mA output signal when between 10-30 VDC power is provided. All of the TXgard Series can be connected and powered by the Gasmaster Series of single and multi-channel control units which offers digital display, built-in battery back-up, continuous output signals, common and individual dual level alarms, relay contacts, and can be used with most other remote sensors that transmit a 4-20 mA signal.